From: Operating system: Ubuntu Linux PHP version: 5.3.6 Package: Compile Failure Bug Type: Bug Bug description:instanceof does not complain even if class is never defined
Description: ------------ PHP does not complain if you check for non-existant class with instanceof. This provides space for subtle errors, like checking for DateRange when only Date_Range class is defined. Test script: --------------- <?php echo PHP_VERSION . "\n"; error_reporting(E_ALL); class Foo {} $a = new Foo; // Notice that Bar class is never defined, however PHP does not complain about missing class. if ($a instanceof Bar) { echo "Should be an error\n"; } else { echo "PHP fail\n"; } Expected result: ---------------- Compiler error thrown saying that Bar was not found. Actual result: -------------- Nothing happens. -- Edit bug report at https://bugs.php.net/bug.php?id=55246&edit=1 -- Try a snapshot (PHP 5.2): https://bugs.php.net/fix.php?id=55246&r=trysnapshot52 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=55246&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=55246&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=55246&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=55246&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=55246&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=55246&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=55246&r=needscript Try newer version: https://bugs.php.net/fix.php?id=55246&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=55246&r=support Expected behavior: https://bugs.php.net/fix.php?id=55246&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=55246&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=55246&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=55246&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=55246&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=55246&r=dst IIS Stability: https://bugs.php.net/fix.php?id=55246&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=55246&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=55246&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=55246&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=55246&r=mysqlcfg Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=55246&r=trysnapshot54